Problem is with resolution I would imagine. Please try this with a smaller list
of components and see if the bars become visible properly. Looks like it is
trying to squeeze alot of info into a small area. The resolution is hard coded
and would need to be changed upstream in the mainline Bugzilla code.

Is the URL still https://bugzilla.redhat.com/rh-bugzilla-beta3/ ?
I've tried to reach it a few times during the weekend. (Because a comment from
you on the 26:th which seems to have been removed again.) But only got error
messages back. I'm not sure if it has been the same message all times, but
right now it says:
Bugzilla is currently broken. Please try again later. If the problem persists,
please contact dkl@redhat.com. The error you should quote is: FATAL 1: Database
"bugs_rc1" does not exist in the system catalog. at globals.pl line 124.

Yes, that worked better. And fter stripping down to just 9 packages, I could
see the bars.
If possible, I think it would be nice with some kind of warning about this in
the bugzilla interface. If the warning comes up only when applicable, only
when I have choosen too many packages, that would of course be best. It wasn't
obvious to me I was choosing too many packages, and somebody else might make the
same mistake.
But in any case, your assumption about the cause of the problem seems to have
been correct.

This should actually be reported in the upstream Bugzilla tree since the person
who originally re-wrote the new charting tool, may have not realized the effect
when alot of components are chosen. I have filed a bug at bugzilla.mozilla.org
with this info so please follow along there.
http://bugzilla.mozilla.org/show_bug.cgi?id=183017